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1363 lines
36 KiB
1363 lines
36 KiB
// SPDX-License-Identifier: GPL-2.0+ |
|
/* |
|
* ioctl.c - NILFS ioctl operations. |
|
* |
|
* Copyright (C) 2007, 2008 Nippon Telegraph and Telephone Corporation. |
|
* |
|
* Written by Koji Sato. |
|
*/ |
|
|
|
#include <linux/fs.h> |
|
#include <linux/wait.h> |
|
#include <linux/slab.h> |
|
#include <linux/capability.h> /* capable() */ |
|
#include <linux/uaccess.h> /* copy_from_user(), copy_to_user() */ |
|
#include <linux/vmalloc.h> |
|
#include <linux/compat.h> /* compat_ptr() */ |
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#include <linux/mount.h> /* mnt_want_write_file(), mnt_drop_write_file() */ |
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#include <linux/buffer_head.h> |
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#include "nilfs.h" |
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#include "segment.h" |
|
#include "bmap.h" |
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#include "cpfile.h" |
|
#include "sufile.h" |
|
#include "dat.h" |
|
|
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/** |
|
* nilfs_ioctl_wrap_copy - wrapping function of get/set metadata info |
|
* @nilfs: nilfs object |
|
* @argv: vector of arguments from userspace |
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* @dir: set of direction flags |
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* @dofunc: concrete function of get/set metadata info |
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* |
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* Description: nilfs_ioctl_wrap_copy() gets/sets metadata info by means of |
|
* calling dofunc() function on the basis of @argv argument. |
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* |
|
* Return Value: On success, 0 is returned and requested metadata info |
|
* is copied into userspace. On error, one of the following |
|
* negative error codes is returned. |
|
* |
|
* %-EINVAL - Invalid arguments from userspace. |
|
* |
|
* %-ENOMEM - Insufficient amount of memory available. |
|
* |
|
* %-EFAULT - Failure during execution of requested operation. |
|
*/ |
|
static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs, |
|
struct nilfs_argv *argv, int dir, |
|
ssize_t (*dofunc)(struct the_nilfs *, |
|
__u64 *, int, |
|
void *, size_t, size_t)) |
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{ |
|
void *buf; |
|
void __user *base = (void __user *)(unsigned long)argv->v_base; |
|
size_t maxmembs, total, n; |
|
ssize_t nr; |
|
int ret, i; |
|
__u64 pos, ppos; |
|
|
|
if (argv->v_nmembs == 0) |
|
return 0; |
|
|
|
if (argv->v_size > PAGE_SIZE) |
|
return -EINVAL; |
|
|
|
/* |
|
* Reject pairs of a start item position (argv->v_index) and a |
|
* total count (argv->v_nmembs) which leads position 'pos' to |
|
* overflow by the increment at the end of the loop. |
|
*/ |
|
if (argv->v_index > ~(__u64)0 - argv->v_nmembs) |
|
return -EINVAL; |
|
|
|
buf = (void *)__get_free_pages(GFP_NOFS, 0); |
|
if (unlikely(!buf)) |
|
return -ENOMEM; |
|
maxmembs = PAGE_SIZE / argv->v_size; |
|
|
|
ret = 0; |
|
total = 0; |
|
pos = argv->v_index; |
|
for (i = 0; i < argv->v_nmembs; i += n) { |
|
n = (argv->v_nmembs - i < maxmembs) ? |
|
argv->v_nmembs - i : maxmembs; |
|
if ((dir & _IOC_WRITE) && |
|
copy_from_user(buf, base + argv->v_size * i, |
|
argv->v_size * n)) { |
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ret = -EFAULT; |
|
break; |
|
} |
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ppos = pos; |
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nr = dofunc(nilfs, &pos, argv->v_flags, buf, argv->v_size, |
|
n); |
|
if (nr < 0) { |
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ret = nr; |
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break; |
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} |
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if ((dir & _IOC_READ) && |
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copy_to_user(base + argv->v_size * i, buf, |
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argv->v_size * nr)) { |
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ret = -EFAULT; |
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break; |
|
} |
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total += nr; |
|
if ((size_t)nr < n) |
|
break; |
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if (pos == ppos) |
|
pos += n; |
|
} |
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argv->v_nmembs = total; |
|
|
|
free_pages((unsigned long)buf, 0); |
|
return ret; |
|
} |
|
|
|
/** |
|
* nilfs_ioctl_getflags - ioctl to support lsattr |
|
*/ |
|
static int nilfs_ioctl_getflags(struct inode *inode, void __user *argp) |
|
{ |
|
unsigned int flags = NILFS_I(inode)->i_flags & FS_FL_USER_VISIBLE; |
|
|
|
return put_user(flags, (int __user *)argp); |
|
} |
|
|
|
/** |
|
* nilfs_ioctl_setflags - ioctl to support chattr |
|
*/ |
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static int nilfs_ioctl_setflags(struct inode *inode, struct file *filp, |
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void __user *argp) |
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{ |
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struct nilfs_transaction_info ti; |
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unsigned int flags, oldflags; |
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int ret; |
|
|
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if (!inode_owner_or_capable(inode)) |
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return -EACCES; |
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|
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if (get_user(flags, (int __user *)argp)) |
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return -EFAULT; |
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|
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ret = mnt_want_write_file(filp); |
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if (ret) |
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return ret; |
|
|
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flags = nilfs_mask_flags(inode->i_mode, flags); |
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|
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inode_lock(inode); |
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|
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oldflags = NILFS_I(inode)->i_flags; |
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|
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ret = vfs_ioc_setflags_prepare(inode, oldflags, flags); |
|
if (ret) |
|
goto out; |
|
|
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ret = nilfs_transaction_begin(inode->i_sb, &ti, 0); |
|
if (ret) |
|
goto out; |
|
|
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NILFS_I(inode)->i_flags = (oldflags & ~FS_FL_USER_MODIFIABLE) | |
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(flags & FS_FL_USER_MODIFIABLE); |
|
|
|
nilfs_set_inode_flags(inode); |
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inode->i_ctime = current_time(inode); |
|
if (IS_SYNC(inode)) |
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nilfs_set_transaction_flag(NILFS_TI_SYNC); |
|
|
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nilfs_mark_inode_dirty(inode); |
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ret = nilfs_transaction_commit(inode->i_sb); |
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out: |
|
inode_unlock(inode); |
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mnt_drop_write_file(filp); |
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return ret; |
|
} |
|
|
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/** |
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* nilfs_ioctl_getversion - get info about a file's version (generation number) |
|
*/ |
|
static int nilfs_ioctl_getversion(struct inode *inode, void __user *argp) |
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{ |
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return put_user(inode->i_generation, (int __user *)argp); |
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} |
|
|
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/** |
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* nilfs_ioctl_change_cpmode - change checkpoint mode (checkpoint/snapshot) |
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* @inode: inode object |
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* @filp: file object |
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* @cmd: ioctl's request code |
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* @argp: pointer on argument from userspace |
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* |
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* Description: nilfs_ioctl_change_cpmode() function changes mode of |
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* given checkpoint between checkpoint and snapshot state. This ioctl |
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* is used in chcp and mkcp utilities. |
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* |
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* Return Value: On success, 0 is returned and mode of a checkpoint is |
|
* changed. On error, one of the following negative error codes |
|
* is returned. |
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* |
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* %-EPERM - Operation not permitted. |
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* |
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* %-EFAULT - Failure during checkpoint mode changing. |
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*/ |
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static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp, |
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unsigned int cmd, void __user *argp) |
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{ |
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struct the_nilfs *nilfs = inode->i_sb->s_fs_info; |
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struct nilfs_transaction_info ti; |
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struct nilfs_cpmode cpmode; |
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int ret; |
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|
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if (!capable(CAP_SYS_ADMIN)) |
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return -EPERM; |
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|
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ret = mnt_want_write_file(filp); |
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if (ret) |
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return ret; |
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|
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ret = -EFAULT; |
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if (copy_from_user(&cpmode, argp, sizeof(cpmode))) |
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goto out; |
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|
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mutex_lock(&nilfs->ns_snapshot_mount_mutex); |
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|
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nilfs_transaction_begin(inode->i_sb, &ti, 0); |
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ret = nilfs_cpfile_change_cpmode( |
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nilfs->ns_cpfile, cpmode.cm_cno, cpmode.cm_mode); |
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if (unlikely(ret < 0)) |
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nilfs_transaction_abort(inode->i_sb); |
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else |
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nilfs_transaction_commit(inode->i_sb); /* never fails */ |
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|
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mutex_unlock(&nilfs->ns_snapshot_mount_mutex); |
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out: |
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mnt_drop_write_file(filp); |
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return ret; |
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} |
|
|
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/** |
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* nilfs_ioctl_delete_checkpoint - remove checkpoint |
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* @inode: inode object |
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* @filp: file object |
|
* @cmd: ioctl's request code |
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* @argp: pointer on argument from userspace |
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* |
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* Description: nilfs_ioctl_delete_checkpoint() function removes |
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* checkpoint from NILFS2 file system. This ioctl is used in rmcp |
|
* utility. |
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* |
|
* Return Value: On success, 0 is returned and a checkpoint is |
|
* removed. On error, one of the following negative error codes |
|
* is returned. |
|
* |
|
* %-EPERM - Operation not permitted. |
|
* |
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* %-EFAULT - Failure during checkpoint removing. |
|
*/ |
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static int |
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nilfs_ioctl_delete_checkpoint(struct inode *inode, struct file *filp, |
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unsigned int cmd, void __user *argp) |
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{ |
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struct the_nilfs *nilfs = inode->i_sb->s_fs_info; |
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struct nilfs_transaction_info ti; |
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__u64 cno; |
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int ret; |
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|
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if (!capable(CAP_SYS_ADMIN)) |
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return -EPERM; |
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|
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ret = mnt_want_write_file(filp); |
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if (ret) |
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return ret; |
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|
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ret = -EFAULT; |
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if (copy_from_user(&cno, argp, sizeof(cno))) |
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goto out; |
|
|
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nilfs_transaction_begin(inode->i_sb, &ti, 0); |
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ret = nilfs_cpfile_delete_checkpoint(nilfs->ns_cpfile, cno); |
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if (unlikely(ret < 0)) |
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nilfs_transaction_abort(inode->i_sb); |
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else |
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nilfs_transaction_commit(inode->i_sb); /* never fails */ |
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out: |
|
mnt_drop_write_file(filp); |
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return ret; |
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} |
|
|
|
/** |
|
* nilfs_ioctl_do_get_cpinfo - callback method getting info about checkpoints |
|
* @nilfs: nilfs object |
|
* @posp: pointer on array of checkpoint's numbers |
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* @flags: checkpoint mode (checkpoint or snapshot) |
|
* @buf: buffer for storing checkponts' info |
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* @size: size in bytes of one checkpoint info item in array |
|
* @nmembs: number of checkpoints in array (numbers and infos) |
|
* |
|
* Description: nilfs_ioctl_do_get_cpinfo() function returns info about |
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* requested checkpoints. The NILFS_IOCTL_GET_CPINFO ioctl is used in |
|
* lscp utility and by nilfs_cleanerd daemon. |
|
* |
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* Return value: count of nilfs_cpinfo structures in output buffer. |
|
*/ |
|
static ssize_t |
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nilfs_ioctl_do_get_cpinfo(struct the_nilfs *nilfs, __u64 *posp, int flags, |
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void *buf, size_t size, size_t nmembs) |
|
{ |
|
int ret; |
|
|
|
down_read(&nilfs->ns_segctor_sem); |
|
ret = nilfs_cpfile_get_cpinfo(nilfs->ns_cpfile, posp, flags, buf, |
|
size, nmembs); |
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up_read(&nilfs->ns_segctor_sem); |
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return ret; |
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} |
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|
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/** |
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* nilfs_ioctl_get_cpstat - get checkpoints statistics |
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* @inode: inode object |
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* @filp: file object |
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* @cmd: ioctl's request code |
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* @argp: pointer on argument from userspace |
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* |
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* Description: nilfs_ioctl_get_cpstat() returns information about checkpoints. |
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* The NILFS_IOCTL_GET_CPSTAT ioctl is used by lscp, rmcp utilities |
|
* and by nilfs_cleanerd daemon. |
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* |
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* Return Value: On success, 0 is returned, and checkpoints information is |
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* copied into userspace pointer @argp. On error, one of the following |
|
* negative error codes is returned. |
|
* |
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* %-EIO - I/O error. |
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* |
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* %-ENOMEM - Insufficient amount of memory available. |
|
* |
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* %-EFAULT - Failure during getting checkpoints statistics. |
|
*/ |
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static int nilfs_ioctl_get_cpstat(struct inode *inode, struct file *filp, |
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unsigned int cmd, void __user *argp) |
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{ |
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struct the_nilfs *nilfs = inode->i_sb->s_fs_info; |
|
struct nilfs_cpstat cpstat; |
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int ret; |
|
|
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down_read(&nilfs->ns_segctor_sem); |
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ret = nilfs_cpfile_get_stat(nilfs->ns_cpfile, &cpstat); |
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up_read(&nilfs->ns_segctor_sem); |
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if (ret < 0) |
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return ret; |
|
|
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if (copy_to_user(argp, &cpstat, sizeof(cpstat))) |
|
ret = -EFAULT; |
|
return ret; |
|
} |
|
|
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/** |
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* nilfs_ioctl_do_get_suinfo - callback method getting segment usage info |
|
* @nilfs: nilfs object |
|
* @posp: pointer on array of segment numbers |
|
* @flags: *not used* |
|
* @buf: buffer for storing suinfo array |
|
* @size: size in bytes of one suinfo item in array |
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* @nmembs: count of segment numbers and suinfos in array |
|
* |
|
* Description: nilfs_ioctl_do_get_suinfo() function returns segment usage |
|
* info about requested segments. The NILFS_IOCTL_GET_SUINFO ioctl is used |
|
* in lssu, nilfs_resize utilities and by nilfs_cleanerd daemon. |
|
* |
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* Return value: count of nilfs_suinfo structures in output buffer. |
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*/ |
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static ssize_t |
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nilfs_ioctl_do_get_suinfo(struct the_nilfs *nilfs, __u64 *posp, int flags, |
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void *buf, size_t size, size_t nmembs) |
|
{ |
|
int ret; |
|
|
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down_read(&nilfs->ns_segctor_sem); |
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ret = nilfs_sufile_get_suinfo(nilfs->ns_sufile, *posp, buf, size, |
|
nmembs); |
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up_read(&nilfs->ns_segctor_sem); |
|
return ret; |
|
} |
|
|
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/** |
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* nilfs_ioctl_get_sustat - get segment usage statistics |
|
* @inode: inode object |
|
* @filp: file object |
|
* @cmd: ioctl's request code |
|
* @argp: pointer on argument from userspace |
|
* |
|
* Description: nilfs_ioctl_get_sustat() returns segment usage statistics. |
|
* The NILFS_IOCTL_GET_SUSTAT ioctl is used in lssu, nilfs_resize utilities |
|
* and by nilfs_cleanerd daemon. |
|
* |
|
* Return Value: On success, 0 is returned, and segment usage information is |
|
* copied into userspace pointer @argp. On error, one of the following |
|
* negative error codes is returned. |
|
* |
|
* %-EIO - I/O error. |
|
* |
|
* %-ENOMEM - Insufficient amount of memory available. |
|
* |
|
* %-EFAULT - Failure during getting segment usage statistics. |
|
*/ |
|
static int nilfs_ioctl_get_sustat(struct inode *inode, struct file *filp, |
|
unsigned int cmd, void __user *argp) |
|
{ |
|
struct the_nilfs *nilfs = inode->i_sb->s_fs_info; |
|
struct nilfs_sustat sustat; |
|
int ret; |
|
|
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down_read(&nilfs->ns_segctor_sem); |
|
ret = nilfs_sufile_get_stat(nilfs->ns_sufile, &sustat); |
|
up_read(&nilfs->ns_segctor_sem); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (copy_to_user(argp, &sustat, sizeof(sustat))) |
|
ret = -EFAULT; |
|
return ret; |
|
} |
|
|
|
/** |
|
* nilfs_ioctl_do_get_vinfo - callback method getting virtual blocks info |
|
* @nilfs: nilfs object |
|
* @posp: *not used* |
|
* @flags: *not used* |
|
* @buf: buffer for storing array of nilfs_vinfo structures |
|
* @size: size in bytes of one vinfo item in array |
|
* @nmembs: count of vinfos in array |
|
* |
|
* Description: nilfs_ioctl_do_get_vinfo() function returns information |
|
* on virtual block addresses. The NILFS_IOCTL_GET_VINFO ioctl is used |
|
* by nilfs_cleanerd daemon. |
|
* |
|
* Return value: count of nilfs_vinfo structures in output buffer. |
|
*/ |
|
static ssize_t |
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nilfs_ioctl_do_get_vinfo(struct the_nilfs *nilfs, __u64 *posp, int flags, |
|
void *buf, size_t size, size_t nmembs) |
|
{ |
|
int ret; |
|
|
|
down_read(&nilfs->ns_segctor_sem); |
|
ret = nilfs_dat_get_vinfo(nilfs->ns_dat, buf, size, nmembs); |
|
up_read(&nilfs->ns_segctor_sem); |
|
return ret; |
|
} |
|
|
|
/** |
|
* nilfs_ioctl_do_get_bdescs - callback method getting disk block descriptors |
|
* @nilfs: nilfs object |
|
* @posp: *not used* |
|
* @flags: *not used* |
|
* @buf: buffer for storing array of nilfs_bdesc structures |
|
* @size: size in bytes of one bdesc item in array |
|
* @nmembs: count of bdescs in array |
|
* |
|
* Description: nilfs_ioctl_do_get_bdescs() function returns information |
|
* about descriptors of disk block numbers. The NILFS_IOCTL_GET_BDESCS ioctl |
|
* is used by nilfs_cleanerd daemon. |
|
* |
|
* Return value: count of nilfs_bdescs structures in output buffer. |
|
*/ |
|
static ssize_t |
|
nilfs_ioctl_do_get_bdescs(struct the_nilfs *nilfs, __u64 *posp, int flags, |
|
void *buf, size_t size, size_t nmembs) |
|
{ |
|
struct nilfs_bmap *bmap = NILFS_I(nilfs->ns_dat)->i_bmap; |
|
struct nilfs_bdesc *bdescs = buf; |
|
int ret, i; |
|
|
|
down_read(&nilfs->ns_segctor_sem); |
|
for (i = 0; i < nmembs; i++) { |
|
ret = nilfs_bmap_lookup_at_level(bmap, |
|
bdescs[i].bd_offset, |
|
bdescs[i].bd_level + 1, |
|
&bdescs[i].bd_blocknr); |
|
if (ret < 0) { |
|
if (ret != -ENOENT) { |
|
up_read(&nilfs->ns_segctor_sem); |
|
return ret; |
|
} |
|
bdescs[i].bd_blocknr = 0; |
|
} |
|
} |
|
up_read(&nilfs->ns_segctor_sem); |
|
return nmembs; |
|
} |
|
|
|
/** |
|
* nilfs_ioctl_get_bdescs - get disk block descriptors |
|
* @inode: inode object |
|
* @filp: file object |
|
* @cmd: ioctl's request code |
|
* @argp: pointer on argument from userspace |
|
* |
|
* Description: nilfs_ioctl_do_get_bdescs() function returns information |
|
* about descriptors of disk block numbers. The NILFS_IOCTL_GET_BDESCS ioctl |
|
* is used by nilfs_cleanerd daemon. |
|
* |
|
* Return Value: On success, 0 is returned, and disk block descriptors are |
|
* copied into userspace pointer @argp. On error, one of the following |
|
* negative error codes is returned. |
|
* |
|
* %-EINVAL - Invalid arguments from userspace. |
|
* |
|
* %-EIO - I/O error. |
|
* |
|
* %-ENOMEM - Insufficient amount of memory available. |
|
* |
|
* %-EFAULT - Failure during getting disk block descriptors. |
|
*/ |
|
static int nilfs_ioctl_get_bdescs(struct inode *inode, struct file *filp, |
|
unsigned int cmd, void __user *argp) |
|
{ |
|
struct the_nilfs *nilfs = inode->i_sb->s_fs_info; |
|
struct nilfs_argv argv; |
|
int ret; |
|
|
|
if (copy_from_user(&argv, argp, sizeof(argv))) |
|
return -EFAULT; |
|
|
|
if (argv.v_size != sizeof(struct nilfs_bdesc)) |
|
return -EINVAL; |
|
|
|
ret = nilfs_ioctl_wrap_copy(nilfs, &argv, _IOC_DIR(cmd), |
|
nilfs_ioctl_do_get_bdescs); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (copy_to_user(argp, &argv, sizeof(argv))) |
|
ret = -EFAULT; |
|
return ret; |
|
} |
|
|
|
/** |
|
* nilfs_ioctl_move_inode_block - prepare data/node block for moving by GC |
|
* @inode: inode object |
|
* @vdesc: descriptor of virtual block number |
|
* @buffers: list of moving buffers |
|
* |
|
* Description: nilfs_ioctl_move_inode_block() function registers data/node |
|
* buffer in the GC pagecache and submit read request. |
|
* |
|
* Return Value: On success, 0 is returned. On error, one of the following |
|
* negative error codes is returned. |
|
* |
|
* %-EIO - I/O error. |
|
* |
|
* %-ENOMEM - Insufficient amount of memory available. |
|
* |
|
* %-ENOENT - Requested block doesn't exist. |
|
* |
|
* %-EEXIST - Blocks conflict is detected. |
|
*/ |
|
static int nilfs_ioctl_move_inode_block(struct inode *inode, |
|
struct nilfs_vdesc *vdesc, |
|
struct list_head *buffers) |
|
{ |
|
struct buffer_head *bh; |
|
int ret; |
|
|
|
if (vdesc->vd_flags == 0) |
|
ret = nilfs_gccache_submit_read_data( |
|
inode, vdesc->vd_offset, vdesc->vd_blocknr, |
|
vdesc->vd_vblocknr, &bh); |
|
else |
|
ret = nilfs_gccache_submit_read_node( |
|
inode, vdesc->vd_blocknr, vdesc->vd_vblocknr, &bh); |
|
|
|
if (unlikely(ret < 0)) { |
|
if (ret == -ENOENT) |
|
nilfs_crit(inode->i_sb, |
|
"%s: invalid virtual block address (%s): ino=%llu, cno=%llu, offset=%llu, blocknr=%llu, vblocknr=%llu", |
|
__func__, vdesc->vd_flags ? "node" : "data", |
|
(unsigned long long)vdesc->vd_ino, |
|
(unsigned long long)vdesc->vd_cno, |
|
(unsigned long long)vdesc->vd_offset, |
|
(unsigned long long)vdesc->vd_blocknr, |
|
(unsigned long long)vdesc->vd_vblocknr); |
|
return ret; |
|
} |
|
if (unlikely(!list_empty(&bh->b_assoc_buffers))) { |
|
nilfs_crit(inode->i_sb, |
|
"%s: conflicting %s buffer: ino=%llu, cno=%llu, offset=%llu, blocknr=%llu, vblocknr=%llu", |
|
__func__, vdesc->vd_flags ? "node" : "data", |
|
(unsigned long long)vdesc->vd_ino, |
|
(unsigned long long)vdesc->vd_cno, |
|
(unsigned long long)vdesc->vd_offset, |
|
(unsigned long long)vdesc->vd_blocknr, |
|
(unsigned long long)vdesc->vd_vblocknr); |
|
brelse(bh); |
|
return -EEXIST; |
|
} |
|
list_add_tail(&bh->b_assoc_buffers, buffers); |
|
return 0; |
|
} |
|
|
|
/** |
|
* nilfs_ioctl_move_blocks - move valid inode's blocks during garbage collection |
|
* @sb: superblock object |
|
* @argv: vector of arguments from userspace |
|
* @buf: array of nilfs_vdesc structures |
|
* |
|
* Description: nilfs_ioctl_move_blocks() function reads valid data/node |
|
* blocks that garbage collector specified with the array of nilfs_vdesc |
|
* structures and stores them into page caches of GC inodes. |
|
* |
|
* Return Value: Number of processed nilfs_vdesc structures or |
|
* error code, otherwise. |
|
*/ |
|
static int nilfs_ioctl_move_blocks(struct super_block *sb, |
|
struct nilfs_argv *argv, void *buf) |
|
{ |
|
size_t nmembs = argv->v_nmembs; |
|
struct the_nilfs *nilfs = sb->s_fs_info; |
|
struct inode *inode; |
|
struct nilfs_vdesc *vdesc; |
|
struct buffer_head *bh, *n; |
|
LIST_HEAD(buffers); |
|
ino_t ino; |
|
__u64 cno; |
|
int i, ret; |
|
|
|
for (i = 0, vdesc = buf; i < nmembs; ) { |
|
ino = vdesc->vd_ino; |
|
cno = vdesc->vd_cno; |
|
inode = nilfs_iget_for_gc(sb, ino, cno); |
|
if (IS_ERR(inode)) { |
|
ret = PTR_ERR(inode); |
|
goto failed; |
|
} |
|
if (list_empty(&NILFS_I(inode)->i_dirty)) { |
|
/* |
|
* Add the inode to GC inode list. Garbage Collection |
|
* is serialized and no two processes manipulate the |
|
* list simultaneously. |
|
*/ |
|
igrab(inode); |
|
list_add(&NILFS_I(inode)->i_dirty, |
|
&nilfs->ns_gc_inodes); |
|
} |
|
|
|
do { |
|
ret = nilfs_ioctl_move_inode_block(inode, vdesc, |
|
&buffers); |
|
if (unlikely(ret < 0)) { |
|
iput(inode); |
|
goto failed; |
|
} |
|
vdesc++; |
|
} while (++i < nmembs && |
|
vdesc->vd_ino == ino && vdesc->vd_cno == cno); |
|
|
|
iput(inode); /* The inode still remains in GC inode list */ |
|
} |
|
|
|
list_for_each_entry_safe(bh, n, &buffers, b_assoc_buffers) { |
|
ret = nilfs_gccache_wait_and_mark_dirty(bh); |
|
if (unlikely(ret < 0)) { |
|
WARN_ON(ret == -EEXIST); |
|
goto failed; |
|
} |
|
list_del_init(&bh->b_assoc_buffers); |
|
brelse(bh); |
|
} |
|
return nmembs; |
|
|
|
failed: |
|
list_for_each_entry_safe(bh, n, &buffers, b_assoc_buffers) { |
|
list_del_init(&bh->b_assoc_buffers); |
|
brelse(bh); |
|
} |
|
return ret; |
|
} |
|
|
|
/** |
|
* nilfs_ioctl_delete_checkpoints - delete checkpoints |
|
* @nilfs: nilfs object |
|
* @argv: vector of arguments from userspace |
|
* @buf: array of periods of checkpoints numbers |
|
* |
|
* Description: nilfs_ioctl_delete_checkpoints() function deletes checkpoints |
|
* in the period from p_start to p_end, excluding p_end itself. The checkpoints |
|
* which have been already deleted are ignored. |
|
* |
|
* Return Value: Number of processed nilfs_period structures or |
|
* error code, otherwise. |
|
* |
|
* %-EIO - I/O error. |
|
* |
|
* %-ENOMEM - Insufficient amount of memory available. |
|
* |
|
* %-EINVAL - invalid checkpoints. |
|
*/ |
|
static int nilfs_ioctl_delete_checkpoints(struct the_nilfs *nilfs, |
|
struct nilfs_argv *argv, void *buf) |
|
{ |
|
size_t nmembs = argv->v_nmembs; |
|
struct inode *cpfile = nilfs->ns_cpfile; |
|
struct nilfs_period *periods = buf; |
|
int ret, i; |
|
|
|
for (i = 0; i < nmembs; i++) { |
|
ret = nilfs_cpfile_delete_checkpoints( |
|
cpfile, periods[i].p_start, periods[i].p_end); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
return nmembs; |
|
} |
|
|
|
/** |
|
* nilfs_ioctl_free_vblocknrs - free virtual block numbers |
|
* @nilfs: nilfs object |
|
* @argv: vector of arguments from userspace |
|
* @buf: array of virtual block numbers |
|
* |
|
* Description: nilfs_ioctl_free_vblocknrs() function frees |
|
* the virtual block numbers specified by @buf and @argv->v_nmembs. |
|
* |
|
* Return Value: Number of processed virtual block numbers or |
|
* error code, otherwise. |
|
* |
|
* %-EIO - I/O error. |
|
* |
|
* %-ENOMEM - Insufficient amount of memory available. |
|
* |
|
* %-ENOENT - The virtual block number have not been allocated. |
|
*/ |
|
static int nilfs_ioctl_free_vblocknrs(struct the_nilfs *nilfs, |
|
struct nilfs_argv *argv, void *buf) |
|
{ |
|
size_t nmembs = argv->v_nmembs; |
|
int ret; |
|
|
|
ret = nilfs_dat_freev(nilfs->ns_dat, buf, nmembs); |
|
|
|
return (ret < 0) ? ret : nmembs; |
|
} |
|
|
|
/** |
|
* nilfs_ioctl_mark_blocks_dirty - mark blocks dirty |
|
* @nilfs: nilfs object |
|
* @argv: vector of arguments from userspace |
|
* @buf: array of block descriptors |
|
* |
|
* Description: nilfs_ioctl_mark_blocks_dirty() function marks |
|
* metadata file or data blocks as dirty. |
|
* |
|
* Return Value: Number of processed block descriptors or |
|
* error code, otherwise. |
|
* |
|
* %-ENOMEM - Insufficient memory available. |
|
* |
|
* %-EIO - I/O error |
|
* |
|
* %-ENOENT - the specified block does not exist (hole block) |
|
*/ |
|
static int nilfs_ioctl_mark_blocks_dirty(struct the_nilfs *nilfs, |
|
struct nilfs_argv *argv, void *buf) |
|
{ |
|
size_t nmembs = argv->v_nmembs; |
|
struct nilfs_bmap *bmap = NILFS_I(nilfs->ns_dat)->i_bmap; |
|
struct nilfs_bdesc *bdescs = buf; |
|
struct buffer_head *bh; |
|
int ret, i; |
|
|
|
for (i = 0; i < nmembs; i++) { |
|
/* XXX: use macro or inline func to check liveness */ |
|
ret = nilfs_bmap_lookup_at_level(bmap, |
|
bdescs[i].bd_offset, |
|
bdescs[i].bd_level + 1, |
|
&bdescs[i].bd_blocknr); |
|
if (ret < 0) { |
|
if (ret != -ENOENT) |
|
return ret; |
|
bdescs[i].bd_blocknr = 0; |
|
} |
|
if (bdescs[i].bd_blocknr != bdescs[i].bd_oblocknr) |
|
/* skip dead block */ |
|
continue; |
|
if (bdescs[i].bd_level == 0) { |
|
ret = nilfs_mdt_get_block(nilfs->ns_dat, |
|
bdescs[i].bd_offset, |
|
false, NULL, &bh); |
|
if (unlikely(ret)) { |
|
WARN_ON(ret == -ENOENT); |
|
return ret; |
|
} |
|
mark_buffer_dirty(bh); |
|
nilfs_mdt_mark_dirty(nilfs->ns_dat); |
|
put_bh(bh); |
|
} else { |
|
ret = nilfs_bmap_mark(bmap, bdescs[i].bd_offset, |
|
bdescs[i].bd_level); |
|
if (ret < 0) { |
|
WARN_ON(ret == -ENOENT); |
|
return ret; |
|
} |
|
} |
|
} |
|
return nmembs; |
|
} |
|
|
|
int nilfs_ioctl_prepare_clean_segments(struct the_nilfs *nilfs, |
|
struct nilfs_argv *argv, void **kbufs) |
|
{ |
|
const char *msg; |
|
int ret; |
|
|
|
ret = nilfs_ioctl_delete_checkpoints(nilfs, &argv[1], kbufs[1]); |
|
if (ret < 0) { |
|
/* |
|
* can safely abort because checkpoints can be removed |
|
* independently. |
|
*/ |
|
msg = "cannot delete checkpoints"; |
|
goto failed; |
|
} |
|
ret = nilfs_ioctl_free_vblocknrs(nilfs, &argv[2], kbufs[2]); |
|
if (ret < 0) { |
|
/* |
|
* can safely abort because DAT file is updated atomically |
|
* using a copy-on-write technique. |
|
*/ |
|
msg = "cannot delete virtual blocks from DAT file"; |
|
goto failed; |
|
} |
|
ret = nilfs_ioctl_mark_blocks_dirty(nilfs, &argv[3], kbufs[3]); |
|
if (ret < 0) { |
|
/* |
|
* can safely abort because the operation is nondestructive. |
|
*/ |
|
msg = "cannot mark copying blocks dirty"; |
|
goto failed; |
|
} |
|
return 0; |
|
|
|
failed: |
|
nilfs_err(nilfs->ns_sb, "error %d preparing GC: %s", ret, msg); |
|
return ret; |
|
} |
|
|
|
/** |
|
* nilfs_ioctl_clean_segments - clean segments |
|
* @inode: inode object |
|
* @filp: file object |
|
* @cmd: ioctl's request code |
|
* @argp: pointer on argument from userspace |
|
* |
|
* Description: nilfs_ioctl_clean_segments() function makes garbage |
|
* collection operation in the environment of requested parameters |
|
* from userspace. The NILFS_IOCTL_CLEAN_SEGMENTS ioctl is used by |
|
* nilfs_cleanerd daemon. |
|
* |
|
* Return Value: On success, 0 is returned or error code, otherwise. |
|
*/ |
|
static int nilfs_ioctl_clean_segments(struct inode *inode, struct file *filp, |
|
unsigned int cmd, void __user *argp) |
|
{ |
|
struct nilfs_argv argv[5]; |
|
static const size_t argsz[5] = { |
|
sizeof(struct nilfs_vdesc), |
|
sizeof(struct nilfs_period), |
|
sizeof(__u64), |
|
sizeof(struct nilfs_bdesc), |
|
sizeof(__u64), |
|
}; |
|
void __user *base; |
|
void *kbufs[5]; |
|
struct the_nilfs *nilfs; |
|
size_t len, nsegs; |
|
int n, ret; |
|
|
|
if (!capable(CAP_SYS_ADMIN)) |
|
return -EPERM; |
|
|
|
ret = mnt_want_write_file(filp); |
|
if (ret) |
|
return ret; |
|
|
|
ret = -EFAULT; |
|
if (copy_from_user(argv, argp, sizeof(argv))) |
|
goto out; |
|
|
|
ret = -EINVAL; |
|
nsegs = argv[4].v_nmembs; |
|
if (argv[4].v_size != argsz[4]) |
|
goto out; |
|
if (nsegs > UINT_MAX / sizeof(__u64)) |
|
goto out; |
|
|
|
/* |
|
* argv[4] points to segment numbers this ioctl cleans. We |
|
* use kmalloc() for its buffer because memory used for the |
|
* segment numbers is enough small. |
|
*/ |
|
kbufs[4] = memdup_user((void __user *)(unsigned long)argv[4].v_base, |
|
nsegs * sizeof(__u64)); |
|
if (IS_ERR(kbufs[4])) { |
|
ret = PTR_ERR(kbufs[4]); |
|
goto out; |
|
} |
|
nilfs = inode->i_sb->s_fs_info; |
|
|
|
for (n = 0; n < 4; n++) { |
|
ret = -EINVAL; |
|
if (argv[n].v_size != argsz[n]) |
|
goto out_free; |
|
|
|
if (argv[n].v_nmembs > nsegs * nilfs->ns_blocks_per_segment) |
|
goto out_free; |
|
|
|
if (argv[n].v_nmembs >= UINT_MAX / argv[n].v_size) |
|
goto out_free; |
|
|
|
len = argv[n].v_size * argv[n].v_nmembs; |
|
base = (void __user *)(unsigned long)argv[n].v_base; |
|
if (len == 0) { |
|
kbufs[n] = NULL; |
|
continue; |
|
} |
|
|
|
kbufs[n] = vmalloc(len); |
|
if (!kbufs[n]) { |
|
ret = -ENOMEM; |
|
goto out_free; |
|
} |
|
if (copy_from_user(kbufs[n], base, len)) { |
|
ret = -EFAULT; |
|
vfree(kbufs[n]); |
|
goto out_free; |
|
} |
|
} |
|
|
|
/* |
|
* nilfs_ioctl_move_blocks() will call nilfs_iget_for_gc(), |
|
* which will operates an inode list without blocking. |
|
* To protect the list from concurrent operations, |
|
* nilfs_ioctl_move_blocks should be atomic operation. |
|
*/ |
|
if (test_and_set_bit(THE_NILFS_GC_RUNNING, &nilfs->ns_flags)) { |
|
ret = -EBUSY; |
|
goto out_free; |
|
} |
|
|
|
ret = nilfs_ioctl_move_blocks(inode->i_sb, &argv[0], kbufs[0]); |
|
if (ret < 0) { |
|
nilfs_err(inode->i_sb, |
|
"error %d preparing GC: cannot read source blocks", |
|
ret); |
|
} else { |
|
if (nilfs_sb_need_update(nilfs)) |
|
set_nilfs_discontinued(nilfs); |
|
ret = nilfs_clean_segments(inode->i_sb, argv, kbufs); |
|
} |
|
|
|
nilfs_remove_all_gcinodes(nilfs); |
|
clear_nilfs_gc_running(nilfs); |
|
|
|
out_free: |
|
while (--n >= 0) |
|
vfree(kbufs[n]); |
|
kfree(kbufs[4]); |
|
out: |
|
mnt_drop_write_file(filp); |
|
return ret; |
|
} |
|
|
|
/** |
|
* nilfs_ioctl_sync - make a checkpoint |
|
* @inode: inode object |
|
* @filp: file object |
|
* @cmd: ioctl's request code |
|
* @argp: pointer on argument from userspace |
|
* |
|
* Description: nilfs_ioctl_sync() function constructs a logical segment |
|
* for checkpointing. This function guarantees that all modified data |
|
* and metadata are written out to the device when it successfully |
|
* returned. |
|
* |
|
* Return Value: On success, 0 is retured. On errors, one of the following |
|
* negative error code is returned. |
|
* |
|
* %-EROFS - Read only filesystem. |
|
* |
|
* %-EIO - I/O error |
|
* |
|
* %-ENOSPC - No space left on device (only in a panic state). |
|
* |
|
* %-ERESTARTSYS - Interrupted. |
|
* |
|
* %-ENOMEM - Insufficient memory available. |
|
* |
|
* %-EFAULT - Failure during execution of requested operation. |
|
*/ |
|
static int nilfs_ioctl_sync(struct inode *inode, struct file *filp, |
|
unsigned int cmd, void __user *argp) |
|
{ |
|
__u64 cno; |
|
int ret; |
|
struct the_nilfs *nilfs; |
|
|
|
ret = nilfs_construct_segment(inode->i_sb); |
|
if (ret < 0) |
|
return ret; |
|
|
|
nilfs = inode->i_sb->s_fs_info; |
|
ret = nilfs_flush_device(nilfs); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (argp != NULL) { |
|
down_read(&nilfs->ns_segctor_sem); |
|
cno = nilfs->ns_cno - 1; |
|
up_read(&nilfs->ns_segctor_sem); |
|
if (copy_to_user(argp, &cno, sizeof(cno))) |
|
return -EFAULT; |
|
} |
|
return 0; |
|
} |
|
|
|
/** |
|
* nilfs_ioctl_resize - resize NILFS2 volume |
|
* @inode: inode object |
|
* @filp: file object |
|
* @argp: pointer on argument from userspace |
|
* |
|
* Return Value: On success, 0 is returned or error code, otherwise. |
|
*/ |
|
static int nilfs_ioctl_resize(struct inode *inode, struct file *filp, |
|
void __user *argp) |
|
{ |
|
__u64 newsize; |
|
int ret = -EPERM; |
|
|
|
if (!capable(CAP_SYS_ADMIN)) |
|
goto out; |
|
|
|
ret = mnt_want_write_file(filp); |
|
if (ret) |
|
goto out; |
|
|
|
ret = -EFAULT; |
|
if (copy_from_user(&newsize, argp, sizeof(newsize))) |
|
goto out_drop_write; |
|
|
|
ret = nilfs_resize_fs(inode->i_sb, newsize); |
|
|
|
out_drop_write: |
|
mnt_drop_write_file(filp); |
|
out: |
|
return ret; |
|
} |
|
|
|
/** |
|
* nilfs_ioctl_trim_fs() - trim ioctl handle function |
|
* @inode: inode object |
|
* @argp: pointer on argument from userspace |
|
* |
|
* Decription: nilfs_ioctl_trim_fs is the FITRIM ioctl handle function. It |
|
* checks the arguments from userspace and calls nilfs_sufile_trim_fs, which |
|
* performs the actual trim operation. |
|
* |
|
* Return Value: On success, 0 is returned or negative error code, otherwise. |
|
*/ |
|
static int nilfs_ioctl_trim_fs(struct inode *inode, void __user *argp) |
|
{ |
|
struct the_nilfs *nilfs = inode->i_sb->s_fs_info; |
|
struct request_queue *q = bdev_get_queue(nilfs->ns_bdev); |
|
struct fstrim_range range; |
|
int ret; |
|
|
|
if (!capable(CAP_SYS_ADMIN)) |
|
return -EPERM; |
|
|
|
if (!blk_queue_discard(q)) |
|
return -EOPNOTSUPP; |
|
|
|
if (copy_from_user(&range, argp, sizeof(range))) |
|
return -EFAULT; |
|
|
|
range.minlen = max_t(u64, range.minlen, q->limits.discard_granularity); |
|
|
|
down_read(&nilfs->ns_segctor_sem); |
|
ret = nilfs_sufile_trim_fs(nilfs->ns_sufile, &range); |
|
up_read(&nilfs->ns_segctor_sem); |
|
|
|
if (ret < 0) |
|
return ret; |
|
|
|
if (copy_to_user(argp, &range, sizeof(range))) |
|
return -EFAULT; |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* nilfs_ioctl_set_alloc_range - limit range of segments to be allocated |
|
* @inode: inode object |
|
* @argp: pointer on argument from userspace |
|
* |
|
* Decription: nilfs_ioctl_set_alloc_range() function defines lower limit |
|
* of segments in bytes and upper limit of segments in bytes. |
|
* The NILFS_IOCTL_SET_ALLOC_RANGE is used by nilfs_resize utility. |
|
* |
|
* Return Value: On success, 0 is returned or error code, otherwise. |
|
*/ |
|
static int nilfs_ioctl_set_alloc_range(struct inode *inode, void __user *argp) |
|
{ |
|
struct the_nilfs *nilfs = inode->i_sb->s_fs_info; |
|
__u64 range[2]; |
|
__u64 minseg, maxseg; |
|
unsigned long segbytes; |
|
int ret = -EPERM; |
|
|
|
if (!capable(CAP_SYS_ADMIN)) |
|
goto out; |
|
|
|
ret = -EFAULT; |
|
if (copy_from_user(range, argp, sizeof(__u64[2]))) |
|
goto out; |
|
|
|
ret = -ERANGE; |
|
if (range[1] > i_size_read(inode->i_sb->s_bdev->bd_inode)) |
|
goto out; |
|
|
|
segbytes = nilfs->ns_blocks_per_segment * nilfs->ns_blocksize; |
|
|
|
minseg = range[0] + segbytes - 1; |
|
do_div(minseg, segbytes); |
|
maxseg = NILFS_SB2_OFFSET_BYTES(range[1]); |
|
do_div(maxseg, segbytes); |
|
maxseg--; |
|
|
|
ret = nilfs_sufile_set_alloc_range(nilfs->ns_sufile, minseg, maxseg); |
|
out: |
|
return ret; |
|
} |
|
|
|
/** |
|
* nilfs_ioctl_get_info - wrapping function of get metadata info |
|
* @inode: inode object |
|
* @filp: file object |
|
* @cmd: ioctl's request code |
|
* @argp: pointer on argument from userspace |
|
* @membsz: size of an item in bytes |
|
* @dofunc: concrete function of getting metadata info |
|
* |
|
* Description: nilfs_ioctl_get_info() gets metadata info by means of |
|
* calling dofunc() function. |
|
* |
|
* Return Value: On success, 0 is returned and requested metadata info |
|
* is copied into userspace. On error, one of the following |
|
* negative error codes is returned. |
|
* |
|
* %-EINVAL - Invalid arguments from userspace. |
|
* |
|
* %-ENOMEM - Insufficient amount of memory available. |
|
* |
|
* %-EFAULT - Failure during execution of requested operation. |
|
*/ |
|
static int nilfs_ioctl_get_info(struct inode *inode, struct file *filp, |
|
unsigned int cmd, void __user *argp, |
|
size_t membsz, |
|
ssize_t (*dofunc)(struct the_nilfs *, |
|
__u64 *, int, |
|
void *, size_t, size_t)) |
|
|
|
{ |
|
struct the_nilfs *nilfs = inode->i_sb->s_fs_info; |
|
struct nilfs_argv argv; |
|
int ret; |
|
|
|
if (copy_from_user(&argv, argp, sizeof(argv))) |
|
return -EFAULT; |
|
|
|
if (argv.v_size < membsz) |
|
return -EINVAL; |
|
|
|
ret = nilfs_ioctl_wrap_copy(nilfs, &argv, _IOC_DIR(cmd), dofunc); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (copy_to_user(argp, &argv, sizeof(argv))) |
|
ret = -EFAULT; |
|
return ret; |
|
} |
|
|
|
/** |
|
* nilfs_ioctl_set_suinfo - set segment usage info |
|
* @inode: inode object |
|
* @filp: file object |
|
* @cmd: ioctl's request code |
|
* @argp: pointer on argument from userspace |
|
* |
|
* Description: Expects an array of nilfs_suinfo_update structures |
|
* encapsulated in nilfs_argv and updates the segment usage info |
|
* according to the flags in nilfs_suinfo_update. |
|
* |
|
* Return Value: On success, 0 is returned. On error, one of the |
|
* following negative error codes is returned. |
|
* |
|
* %-EPERM - Not enough permissions |
|
* |
|
* %-EFAULT - Error copying input data |
|
* |
|
* %-EIO - I/O error. |
|
* |
|
* %-ENOMEM - Insufficient amount of memory available. |
|
* |
|
* %-EINVAL - Invalid values in input (segment number, flags or nblocks) |
|
*/ |
|
static int nilfs_ioctl_set_suinfo(struct inode *inode, struct file *filp, |
|
unsigned int cmd, void __user *argp) |
|
{ |
|
struct the_nilfs *nilfs = inode->i_sb->s_fs_info; |
|
struct nilfs_transaction_info ti; |
|
struct nilfs_argv argv; |
|
size_t len; |
|
void __user *base; |
|
void *kbuf; |
|
int ret; |
|
|
|
if (!capable(CAP_SYS_ADMIN)) |
|
return -EPERM; |
|
|
|
ret = mnt_want_write_file(filp); |
|
if (ret) |
|
return ret; |
|
|
|
ret = -EFAULT; |
|
if (copy_from_user(&argv, argp, sizeof(argv))) |
|
goto out; |
|
|
|
ret = -EINVAL; |
|
if (argv.v_size < sizeof(struct nilfs_suinfo_update)) |
|
goto out; |
|
|
|
if (argv.v_nmembs > nilfs->ns_nsegments) |
|
goto out; |
|
|
|
if (argv.v_nmembs >= UINT_MAX / argv.v_size) |
|
goto out; |
|
|
|
len = argv.v_size * argv.v_nmembs; |
|
if (!len) { |
|
ret = 0; |
|
goto out; |
|
} |
|
|
|
base = (void __user *)(unsigned long)argv.v_base; |
|
kbuf = vmalloc(len); |
|
if (!kbuf) { |
|
ret = -ENOMEM; |
|
goto out; |
|
} |
|
|
|
if (copy_from_user(kbuf, base, len)) { |
|
ret = -EFAULT; |
|
goto out_free; |
|
} |
|
|
|
nilfs_transaction_begin(inode->i_sb, &ti, 0); |
|
ret = nilfs_sufile_set_suinfo(nilfs->ns_sufile, kbuf, argv.v_size, |
|
argv.v_nmembs); |
|
if (unlikely(ret < 0)) |
|
nilfs_transaction_abort(inode->i_sb); |
|
else |
|
nilfs_transaction_commit(inode->i_sb); /* never fails */ |
|
|
|
out_free: |
|
vfree(kbuf); |
|
out: |
|
mnt_drop_write_file(filp); |
|
return ret; |
|
} |
|
|
|
long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
|
{ |
|
struct inode *inode = file_inode(filp); |
|
void __user *argp = (void __user *)arg; |
|
|
|
switch (cmd) { |
|
case FS_IOC_GETFLAGS: |
|
return nilfs_ioctl_getflags(inode, argp); |
|
case FS_IOC_SETFLAGS: |
|
return nilfs_ioctl_setflags(inode, filp, argp); |
|
case FS_IOC_GETVERSION: |
|
return nilfs_ioctl_getversion(inode, argp); |
|
case NILFS_IOCTL_CHANGE_CPMODE: |
|
return nilfs_ioctl_change_cpmode(inode, filp, cmd, argp); |
|
case NILFS_IOCTL_DELETE_CHECKPOINT: |
|
return nilfs_ioctl_delete_checkpoint(inode, filp, cmd, argp); |
|
case NILFS_IOCTL_GET_CPINFO: |
|
return nilfs_ioctl_get_info(inode, filp, cmd, argp, |
|
sizeof(struct nilfs_cpinfo), |
|
nilfs_ioctl_do_get_cpinfo); |
|
case NILFS_IOCTL_GET_CPSTAT: |
|
return nilfs_ioctl_get_cpstat(inode, filp, cmd, argp); |
|
case NILFS_IOCTL_GET_SUINFO: |
|
return nilfs_ioctl_get_info(inode, filp, cmd, argp, |
|
sizeof(struct nilfs_suinfo), |
|
nilfs_ioctl_do_get_suinfo); |
|
case NILFS_IOCTL_SET_SUINFO: |
|
return nilfs_ioctl_set_suinfo(inode, filp, cmd, argp); |
|
case NILFS_IOCTL_GET_SUSTAT: |
|
return nilfs_ioctl_get_sustat(inode, filp, cmd, argp); |
|
case NILFS_IOCTL_GET_VINFO: |
|
return nilfs_ioctl_get_info(inode, filp, cmd, argp, |
|
sizeof(struct nilfs_vinfo), |
|
nilfs_ioctl_do_get_vinfo); |
|
case NILFS_IOCTL_GET_BDESCS: |
|
return nilfs_ioctl_get_bdescs(inode, filp, cmd, argp); |
|
case NILFS_IOCTL_CLEAN_SEGMENTS: |
|
return nilfs_ioctl_clean_segments(inode, filp, cmd, argp); |
|
case NILFS_IOCTL_SYNC: |
|
return nilfs_ioctl_sync(inode, filp, cmd, argp); |
|
case NILFS_IOCTL_RESIZE: |
|
return nilfs_ioctl_resize(inode, filp, argp); |
|
case NILFS_IOCTL_SET_ALLOC_RANGE: |
|
return nilfs_ioctl_set_alloc_range(inode, argp); |
|
case FITRIM: |
|
return nilfs_ioctl_trim_fs(inode, argp); |
|
default: |
|
return -ENOTTY; |
|
} |
|
} |
|
|
|
#ifdef CONFIG_COMPAT |
|
long nilfs_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
|
{ |
|
switch (cmd) { |
|
case FS_IOC32_GETFLAGS: |
|
cmd = FS_IOC_GETFLAGS; |
|
break; |
|
case FS_IOC32_SETFLAGS: |
|
cmd = FS_IOC_SETFLAGS; |
|
break; |
|
case FS_IOC32_GETVERSION: |
|
cmd = FS_IOC_GETVERSION; |
|
break; |
|
case NILFS_IOCTL_CHANGE_CPMODE: |
|
case NILFS_IOCTL_DELETE_CHECKPOINT: |
|
case NILFS_IOCTL_GET_CPINFO: |
|
case NILFS_IOCTL_GET_CPSTAT: |
|
case NILFS_IOCTL_GET_SUINFO: |
|
case NILFS_IOCTL_SET_SUINFO: |
|
case NILFS_IOCTL_GET_SUSTAT: |
|
case NILFS_IOCTL_GET_VINFO: |
|
case NILFS_IOCTL_GET_BDESCS: |
|
case NILFS_IOCTL_CLEAN_SEGMENTS: |
|
case NILFS_IOCTL_SYNC: |
|
case NILFS_IOCTL_RESIZE: |
|
case NILFS_IOCTL_SET_ALLOC_RANGE: |
|
case FITRIM: |
|
break; |
|
default: |
|
return -ENOIOCTLCMD; |
|
} |
|
return nilfs_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)); |
|
} |
|
#endif
|
|
|